Efficient energy-saving adjusting system for centrifugal chiller output energy

• Main Authors: SU SHENGFENG, YANG CUNHUA
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The utility model relates to an efficient energy-saving adjusting system for centrifugal chiller output energy. A centrifugal chiller is provided with a cooling tower and a condensing tower. A cooling loop is formed between the cooling tower and the condensing tower through a water inlet pipe and a water outlet pipe. The adjusting system comprises a variable water pump, a frequency converter, a first temperature sensor, a second temperature sensor and a temperature controller. The variable water pump and the first temperature sensor are arranged on the water inlet pipe. The second temperature sensor is arranged on the water outlet pipe. The input end of the temperature controller is connected with the output end of the first temperature sensor and the output end of the second temperature sensor. The input end of the frequency converter is connected with the output end of the temperature controller. The output end of the frequency converter is connected with the control end of the variable water pump. Compared with the prior art, the frequency converter is controlled based on the temperature difference, then flow on the cooling loop is changed, the good energy-saving effect is achieved, cooling water losses can be significantly reduced, the rotating speed is decreased, and the service life of the pump and a motor is prolonged.